RADT_152_Unit_9_Exam

RADT_152_Unit_9_Exam - RADT 152 Radiation Protection Unit...

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Unformatted text preview: RADT 152 Radiation Protection Unit Exam Unit 9 Radiation Monitoring 2 9.0 Radiation Monitoring Directions: 1. Write your name and the date on your scantron form. Identify the subject as the course number (for example, RADT 101) along with the test number (for example, Unit 1). 2. For each of the questions below, select the best answer to the question. 3. Using a No. 2 pencil, fill in the appropriate answer on the answer sheet. 4. Erase unwanted answers completely. Questions with two or more filled in answer spaces are graded as incorrect. 5. Answer all questions. 6. You have a maximum 15 minutes to complete the following 25 questions. (Note this time factor approximates the amount of time you would be allowed to answer the same number of questions on the Registry examination in radiography) -----------------------------------------------------------------------------------------1. The monitoring of radiation exposure to any person occupationally exposed regularly to ionizing radiation is the definition of: A. B. C. D. E. 2. A personnel monitoring device is required whenever radiation workers are likely to risk receiving 20% or more of the annual occupational effective dose limit of 5 rem in any single year. A. B. 3. Thermoluminescent dosimetry Extremity dosimetry Personnel dosimetry Dosimetry ODM (Occupational Dose Monitoring) True False This provides an indication of the workers habits and working conditions of diagnostic imaging personnel. A. B. C. Extremity dosimeter Personnel dosimeter Optical dosimeter 3 D. E. 4. During routine radiographic procedures, when a protective apron is being worn, the primary personnel dosimeter should be attached to the clothing on the front of the body at: A. B. C. D. E. 5. Collar level, inside the apron, to approximate the maximum radiation dose to the thyroid and the head and neck. Chest level to approximate the maximum radiation dose to the heart and lungs. Hip level to approximate the maximum radiation dose to the reproductive organs. Waist level to approximate the maximum radiation dose to the small intestine. Collar level, outside the apron, to approximate the maximum radiation dose to the thyroid and the head and neck. State the 2 places the monitoring system should be worn during special procedures. A. B. C. D. E. 6. Thermoluminescent dosimeter (TLD) Film badge Primary: Primary: Primary: Primary: Primary: outside collar, Secondary: inside collar inside collar, Secondary: outside limb outside collar, Secondary: inside waist outside collar, Secondary: outside waist inside collar, Secondary: inside waist This should be worn by technologist as a second monitor when performing radiographic procedures that require the hands to be near the primary x-ray beam. The monitor measures the approximate dose equivalent to the hands. A. B. C. D. E. Extremity dosimeter Personnel dosimeter Optical dosimeter Pocket dosimeter Film badge 4 7. Which of the following is not a type of personnel dosimeter. A. B. C. D. E. 8. This is an economical type of personnel monitoring device. It records a whole-body radiation exposure accumulated at a low rate over a long period of time. It is known as: A. B. C. D. E. 9. Film badge Optically stimulated luminescent dosimeters (OSLs) Pocket ionization chambers Thermoluminescent dosimeters (TLDs) Electrometer Extremity dosimeter Personnel dosimeter Optical dosimeter Pocket dosimeter Film badge Which of the following make up a film badge: 1. 2. 3. 4. 5. A. B. C. D. E. 10. A lightweight plastic film holder. A lightweight aluminum film holder. Metal filters Film pocket Crystalline form of lithium fluoride. 1 only 3 only 1, 3, and 5 2 and 4 1, 3, and 4 This is similar to dental film. It is very sensitive to doses ranging from as low as 10 mrem to as high as 500 rem, it is called: A. B. C. D. E. Mammography film Photo sensitive film Radiation-dosimetry film Phosphoric film Sulfuric film 5 11. It is an instrument used to measure optical density. A. B. C. D. E. 12. The intensity of light transmitted through a given area of the dosimetry film, and compares it with the intensity of light incident on the anterior side of the film is called: A. B. C. D. E. 13. Film density Optical density Thermoluminescent density Wave density Proportional density A written report of occupational radiation exposure of personnel. Prepared by the monitoring company. A. B. C. D. E. 14. Densitometer Thermoluminescent dosimeter. Electrometer. Survey meter Geiger-Muller detector Radiation Dosimetry report Radiation Dose report Survey report Personnel monitoring report Company report Which of the following is a device for monitoring occupational exposure that contains an aluminum oxide detector and uses a laser that makes the material become luminescent in proportion to the amount of radiation exposure received? A. B. C. D. E. Film badge Optically stimulated luminescence dosimeter Pocket ionization chamber Thermoluminescent dosimeter Densitometer 6 15. For x-ray and gamma ray photons with energies from 5 keV to in excess of 40 MeV, the _________ gives an accurate reading as low as 1 mrem. A. B. C. D. E. 16. Which of the following personnel dosimeters allows a radiation worker to determine exposure received immediately on completion of a specific radiologic procedure? A. B. C. D. E. 17. Film badge Optically stimulated luminescence dosimeter Pocket dosimeter Thermoluminescent dosimeter Densitometer The pocket dosimeter should read 1.8 before it can be used. A. B. 18. Film badge Optically stimulated luminescence dosimeter Pocket ionization chamber Thermoluminescent dosimeter Densitometer True False Which of the following is a personnel monitoring device that most often contains a crystalline form of lithium fluoride as its sensing material? A. B. C. D. E. Film badge Optically stimulated luminescence dosimeter Pocket ionization chamber Thermoluminescent dosimeter Densitometer 7 19. Which of the following are disadvantages of using a TLD? 1. 2. 3. 4. 5. A. B. C. D. E. 20. Ionization chamber-type survey meter (cutie pie) Proportional counter Geiger-Muller detector Both A and C All of the above Which of the following instruments should be used in an x-ray installation to assess fluoroscopic scatter radiation exposure rate? A. B. C. D. E. 22. 5 only 1 and 5 2 and 4 1, 3, and 5 1, 2, 3, 4, and 5 Which of the following is a (are) type(s) of gas-filled radiation survey instruments. A. B. C. D. E. 21. Only one readout may be obtained It only reads gamma rays Readout or readouts can be lost if the readout procedure is not carefully conducted They are larger and more awkward to wear. There is a greater initial cost than with film badge service Geiger-Muller detector Ionization chamber with electrometer Proportional counter Thermoluminescent dosimeter None of the above Which of the following instruments should be used to locate a lost radioactive source or detect low-level radioactive contamination? A. B. C. D. E. Geiger-Muller detector Proportional counter Ionization chamber-type survey meter Thermoluminescent dosimeter analyzer Proportional dosimeter 8 23. Radiation survey instruments measure the total quantity of electrical charge resulting from ionization of the gas and the rate at which an electrical charge is produced. A. B. 24. A device that can measure tiny electrical currents with high precision and accuracy. It is used to calibrate instruments is called a: A. B. C. D. E. 25. True False Radiation survey instrument Magnomometer Optical Dosimeter Densitometer Electrometer X-ray output in mR/mAs, reproducibility and linearity of output, timer accuracy, half-value layer or beam quality, entrance exposure rates for fluoroscopy units should be stated on a report from what? A. B. C. D. E. Densitometer Electrometer TLD Film badge Radiation Survey instrument ...
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